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new 67ffe7974c doc: Add STM32H745I-DISCO RPTUN documentation
67ffe7974c is described below
commit 67ffe7974cfc42c4368bc1b58ca3b2918e0ea66f
Author: Nonpawit Ekburanawat <[email protected]>
AuthorDate: Tue Sep 17 21:08:35 2024 +0200
doc: Add STM32H745I-DISCO RPTUN documentation
Signed-off-by: Nonpawit Ekburanawat <[email protected]>
---
.../arm/stm32h7/boards/stm32h745i-disco/index.rst | 34 +++++++++++++++++++---
1 file changed, 30 insertions(+), 4 deletions(-)
diff --git
a/Documentation/platforms/arm/stm32h7/boards/stm32h745i-disco/index.rst
b/Documentation/platforms/arm/stm32h7/boards/stm32h745i-disco/index.rst
index ca103ecf94..18d73a2f61 100644
--- a/Documentation/platforms/arm/stm32h7/boards/stm32h745i-disco/index.rst
+++ b/Documentation/platforms/arm/stm32h7/boards/stm32h745i-disco/index.rst
@@ -3,9 +3,13 @@ ST STM32H745I-DISCO
===================
Dual core support
------------------
+=================
It is recommended to use CMake to build firmware consisting of multiple images.
+
+Dual instances
+--------------
+
The commands to build ``nsh_xxx`` configurations are as follows::
cmake -B build_cm7 -DBOARD_CONFIG=stm32h745i-disco:nsh_cm7 -GNinja
@@ -14,8 +18,19 @@ The commands to build ``nsh_xxx`` configurations are as
follows::
cmake --build build_cm7
cmake --build build_cm4
+Dual core RPTun
+---------------
+
+The commands to build ``nsh_xxx_rptun`` configurations are as follows::
+
+ cmake -B build_cm7_rptun -DBOARD_CONFIG=stm32h745i-disco:nsh_cm7_rptun
-GNinja
+ cmake -B build_cm4_rptun -DBOARD_CONFIG=stm32h745i-disco:nsh_cm4_rptun
-GNinja
+
+ cmake --build build_cm7_rptun
+ cmake --build build_cm4_rptun
+
Serial console
---------------
+==============
The STM32H745I-DISCO board's ST-LINK interface is connected to USART3, which
is used as the serial console for the Cortex-M7 core by default. The
@@ -28,7 +43,8 @@ USART3_RX PB11
USART3_TX PB10
================= ====
-When using the nsh_xxx configuration, UART7 is assigned to the Cortex-M4 core.
+When using the ``nsh_xxx`` configuration, UART7 is assigned to the Cortex-M4
+core.
The UART7 connections can be accessed via the Arduino connector on the board:
================= =================
@@ -40,4 +56,14 @@ UART7_TX PB4 (Arduino D5)
This allows the Cortex-M4 core to utilize a separate serial interface, making
it possible to debug or interact with both cores simultaneously through
-different UART interfaces.
\ No newline at end of file
+different UART interfaces.
+
+RPTun
+-----
+
+When using the ``nsh_xxx_rptun`` configuration, users can connect to the
+CM4 core from the CM7 core by using the ``cu`` command::
+
+ nsh-cm7> cu -l /dev/ttyproxy
+ NuttShell (NSH) NuttX-10.4.0
+ nsh-cm4>
